/* ============================================================
   Страница 3: карточка сценария (scenario.html).
   ============================================================ */

.scenario-page {
  display: flex;
  justify-content: center;
  padding: 32px 0 96px;
}

.scenario-card {
  width: 100%;
  max-width: 720px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

/* --- Шапка сценария --- */
.scenario-hero {
  display: flex;
  align-items: center;
  gap: 16px;
}

.scenario-hero__icon {
  flex: none;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent-tint);
  color: var(--accent);
  display: grid;
  place-items: center;
}

.scenario-hero__name {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -.01em;
}

.scenario-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

/* --- Бриф --- */
.brief {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 22px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.brief__label {
  margin: 0 0 6px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.brief__text {
  margin: 0;
  font-size: 14.5px;
}

.brief__list {
  margin: 0;
  padding-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 14px;
}

/* --- Настройки старта --- */
.setup {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 2px;
}

.setup__row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.setup__label {
  flex: none;
  width: 190px;
  font-size: 14px;
  font-weight: 600;
}

/* Звёзды сложности */
.stars { display: flex; gap: 4px; }

.stars__btn {
  padding: 2px;
  color: #C9D2DC;
  transition: color var(--dur-2) var(--ease-standard), transform var(--dur-2) var(--ease-standard);
}

.stars__btn svg { fill: none; stroke: currentColor; }
.stars__btn.is-on { color: var(--warning); }
.stars__btn.is-on svg { fill: currentColor; }
.stars__btn:hover { transform: scale(1.1); }

.stars__caption {
  font-size: 14px;
  color: var(--text-muted);
}

/* Переключатель режима */
.segmented {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  background: var(--neutral-soft);
  border-radius: var(--radius-sm);
}

.segmented__btn {
  padding: 7px 24px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  transition: background var(--dur-2) var(--ease-standard), color var(--dur-2) var(--ease-standard), box-shadow var(--dur-2) var(--ease-standard);
}

.segmented__btn.is-active {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.mode-hint {
  margin: -8px 0 0;
  font-size: 14px;
  color: var(--text-muted);
}

/* --- Главная кнопка --- */
.start-btn {
  width: 100%;
  height: 52px;
  font-size: 15px;
  letter-spacing: .06em;
  text-transform: uppercase;
  border-radius: var(--radius);
}

/* --- Расширенные настройки --- */
.advanced__summary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 600;
  list-style: none;
  transition: color var(--dur-2) var(--ease-standard);
}

.advanced__summary:hover { color: var(--text); }
.advanced__summary::-webkit-details-marker { display: none; }

.advanced__summary svg { transition: transform var(--dur-3) var(--ease-standard); }
.advanced[open] .advanced__summary svg { transform: rotate(180deg); }

.advanced__body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 8px;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

/* Тумблер */
.switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 14px;
  cursor: pointer;
}

.switch { position: relative; display: inline-block; flex: none; }

.switch input {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.switch__track {
  display: block;
  width: 40px;
  height: 22px;
  border-radius: 999px;
  background: #D5DDE5;
  position: relative;
  transition: background var(--dur-3) var(--ease-standard);
}

.switch__track::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 2px rgba(0, 0, 0, .2);
  transition: transform var(--dur-3) var(--ease-standard);
}

.switch input:checked + .switch__track { background: var(--accent); }
.switch input:checked + .switch__track::after { transform: translateX(18px); }
.switch input:focus-visible + .switch__track { outline: 2px solid var(--accent); outline-offset: 2px; }

/* Ползунок длины сессии */
.range-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.range-row small {
  display: block;
  margin-top: 8px;
  color: var(--text-muted);
  font-size: 11px;
  line-height: 1.45;
}

.range-row input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

/* --- Пустое/ошибка: дубль блока из catalog.css,
     надоест дублировать — перенеси оба в base.css --- */
.empty {
  padding: 48px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
}

.empty__title {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.empty .btn { margin-top: 14px; }

@media (max-width: 560px) {
  .setup__label { width: 100%; }
  .scenario-hero__icon { width: 48px; height: 48px; }
}